Re: HYPER VOLUMES - RE: "Never split index and data files ..."

• Original Message -----

> Ever since ZBR, the need to use the outside of the disk ( to
> reduce seeks ) is significantly reduced.
>

PMFJI.
The reason for using the outside of the disk is the increased linear velocity there re the heads. Larger circle, same angular velocity, larger linear velocity. Which means you get faster read data transfer rate. Nothing at all to do with reducing seeks. What you end up with is less rotational latency and significantly faster (up to 30% best case) data transfer speed from the silver to the disk cache. From there on to the disk controller and the buffers, it's all the same.

This was explained to me by a guy that works on firmware for Seagate. He sent me the best "disk speed measure" program I've ever seen!

Cheers
Nuno Souto
nsouto_at_nsw.bigpond.net.au
http://www.users.bigpond.net.au/the_Den

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-- 
Author: Nuno Souto
  INET: nsouto_at_nsw.bigpond.net.au

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